fix: Prevent redirects

I observed that when the user specifies an invalid URL to their Radarr
or Sonarr instance (such as forgetting to use the Base URL), it attempts
to redirect by returning HTTP 300. This is now prevented and a warning
is printed to output.

CHANGELOG.md

@@ -8,6 +8,11 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 
 ## [Unreleased]
 
+### Changed
+
+- Do not follow HTTP redirects and instead issue a warning to the user that they are potentially
+  using the wrong URL.
+
 ## [1.8.2] - 2022-03-06
 
 ### Fixed

src/TrashLib/Extensions/FlurlLogging.cs

@@ -22,5 +22,13 @@ public static class FlurlLogging
             var url = urlInterceptor(call.Request.Url.Clone());
             log.Debug("HTTP Response {Status} from {Url}", statusCode, url);
         };
+
+        settings.OnRedirect = call =>
+        {
+            log.Warning("HTTP Redirect received; this indicates a problem with your URL and/or reverse proxy: {Url}",
+                call.Redirect.Url);
+
+            call.Redirect.Follow = false;
+        };
     }
 }